gnash
verb (used with object)
to grind or strike (the teeth) together, especially in rage or pain.
Used to describe an ongoing action or continuous state that will be taking place in the future.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Come Tuesday, nearly half the population will be gnashing its teeth.
From Inc ● Nov. 2, 2012